isida upgrade m2: 6/10 i need 4 more upgrades to max upgrade but i dont know if it is worth the upgrade or not my combo is isida m2 upgrade 6/10 with viking m2 upgrade: 2/10 i like to play defense only but also i like to move as fast as i can but it seems like my viking is trash

will i am at "Captain" right now so i guess i need to wait or buy a kit another question is it worth it to buy one of isida alterations the one that cost 20k or the one that cost 55k? right now i have 30k+ crystal

Guys can i upgrade my isida from m2 to m3 just by upgrading the isida?